Vehicle-tire.



No. 761,335. Q I PATENTED MAY 31,1904.

VEHICLE TIRE.

APPLIUATION FILED AUG. 15, 1903. N0 MODEL.

'Mmesses' lavenior' S AT Patented May 31, 1904. I

PAT NT OFFI E.

. JAMEsL A LLEN .SWINEHART, OFAKRON, OHIO.

VEHICLE-TIRE. j

\ SPECIFICATION forming part of Letters Patent No. 761,335, dated May31, 1904.

Application filed August I5, 1903. 1

I (.LZZ whoj'n, it may] concern.-

- Be it known that I, JAMEs'ALLnN SWINE- H'ART, of'Akron, in. the countyof Summit, State of Ohio, haveinvented certain newand usefulImprovements in Vehicle-Tires; and I do hereby declare the following tobe a full, clear, and exact description of the same, reference being hadto the accompanying draw- I ings, forming apart of this specification,and

to the'ilet-ters of reference marked thereon.

This invention relates to improvements in vehicle-tiresisuch as employ arubber or elastic tread portion or tire proper suitably held in achanneled rim, the objects of the invention being to provide'a simpleand highly efficient means whereby the tire or tread portion will beheld in the rimw'i'th a capacity for ready removal and repair. I

The invention cons sts in certain noveldeta ls of construct on andcombinations and ar- 8 rangements ofparts, all as will be now deeltypointed out in the appendedclaim's. v

V, In the accompanying drawings, Figural is r is a perspective view of asection of the clamps for ret'ammg the the in the rim. Fig. 3'1sascribed, and the particular features of nova crossfsectional Viewthrough a rim and tire embodylng the present improvements. Fig. 2

similar View with thel clamps spread. Fig. 4

is a View of a key for spreading the clamps.

v Fig.5 is a diagrammaticillustration of amodi- I ures indicate the sameparts.

lied arrangement.- wv Like letters of reference in the several fig- Theletter A in the accompanyingdrawings indicates a rim fora Wheel, whichrim in cross section is channeled on the outer face and employed incarrying out the present inven ar No. 169,659. (No model.)

"have a relatively small central concavity or recess, as indicated bythe dotted line C. In .other'words, the tire may be of the pneumatic,solid, semipneumatic, or cushion type, as desired. Within the base ofthe tire, and preferably adjacent the center'of, the rim, there arearranged clamps which may be in the fform of bars D conforming to thecurvature of the rim, and, if desired, extending entirely around thesame. These clamps or bars 1) preferably have their outer edges (Zundercut l or inclined and form, with the recesses 60, c han-. nels withundercut walls, in which channels the base portions of the tire B may befirmly secured and clamped by spreading the bars D apart Obviously thesaid bars may be spread or separated so as to effect the clamping of theprojections on the tire by various mechanical means, and in thepreferred construction the said bars are provided or formed on their ad-I jacent faces with a series of cooperating inclines or inclinedsurfaces D, which when the bars are movedin one di'rection'with relationto each other will cause then; outer faces to separate or spreadtransversely' fof the rim and tire.

The angle of the inclines may be such that the partswill be retained intheir adjusted po- "sition by the friction of the coacting faces,

together Withthe friction on the rim and tire, respectively, althoughany ordinary locking means may be provided for retaining them inadjusted position, if so desired. As a convenient and eifective meansfor adjusting the clamping-bars with relation to each other theiradjacent faces at one or more points may be toothed, forming rack-bars,as indicated at Da -Figs. 2 and '3, and apinioh-key F, Fig.

4:, is adapted to seat between and engage" therewith in order to adjust.the bars longitudinally with relation to each other. This key F may ormay not form apermanent part of j the structure; but in any event it ispreferably inserted through the rim, as indicated in Fig. 1, and whenthe clamps have been adjusted it may be removed and retained until.other adjustment is necessary. 1

In lieu of moving the clamping-bars longitudinally in spreading them itis obvious that they may be given a direct transversemovement, and inFig. 5 a means is shown wherebythis may be accomplished. In said Fig 5the bars are indicated by the letter G as parallel bars, and betweenthem at suitable intervals keys H are interposed, said keys H beingjournaled on the rims and each having a short and a long dimension. Whensaid keys are turned so that the short dimension is presented to thebars, the latter are free to move toward each other a suflEicientdistance to permit of the insertion or removal of the projections orenlargements on the tire; but when said keys are turned to present theirlong dimensions to the bars the latter will be spread a suflicientdistance to clamp the enlargements or projections on the tire. In otherwords, by spreading the clamping-bars the channels in which theprojections on the tire fit are reduced in width and the saidprojections are firmly clamped and held so as to prevent the escape ofthe tire from the rim.

It is preferred that the tire should embody in its construction a canvasor fabric surface adjacent the rim and clamp, as indicated at K, and asan additional safeguard against the withdrawal of the enlargement on thetire from the undercut channel the said enlargement may be provided withtransverse stays or wires L, the ends of the latter underlying theoverhanging walls formed by the outer sides or edges of theclamping-bars and inner sides of the rim. In order to retain the bars intheir proper relative positions, they may be provided withretainerssuch, for instance, as the clips M-formed on one of the bars,with their ends seating and working in grooves N on the other bar, thegrooves extending in a plane parallel with the plane of movement of thebars when adjusted, as before described.

Withthe construction described it is obvious that the insertion orremoval of a tire from the rim is an exceedingly simple matter, inasmuchas it is only necessary to first release the clamping-bars or move themso as to reduce the distance between their outer edges, then place thetire in position, and finally spread the clamping-bars so as to clampthe projections or enlargements on the tire in the channels formedbetween the clamping-bars and edges of the rim. Bars of the characterdescribed may be formed to present no corners or angles in which aninner tube will be pinched or caught when a tire is placed in position,and as a consequence difficulties heretofore encountered in placingdouble-tube tires in position with clamping devices as heretofore usedare entirely obviated.

Having thus described my invention, what I claim as my invention, anddesire to secure by Letters Patent, is

1. In a vehicle-tire, the combination with the undercut channeled rimand elastic tire having projections fitting the undercut portions of therim, of relatively transversely movable clamping-bars in said channelarranged to move in the same plane between the projections of the tireand means for moving said bars transversely against the projections toclamp the projections between the bars and the rim; substantially asdescribed.

2. In a vehicle-tire, the combination with the undercut channeled rimand elastic tire having projections fitting the undercut portions of therim, of two parallel clamping-bars located in the rim between theprojections and movable transversely in opposite directions in the sameplane and means for moving'said bars transversely to force their outeredges against the projections of the tire to clamp said projectionsbetween the rim and the bars; substantially as described.

3. In a vehicle-tire, the combination with the undercut channeled rimand elastic tire seating in said rim, of transversely-moval)leclamping-bars located in the channel of the rim and forming with theundercut channelrim channels for the base portion of the tire and a keyseating between the proximate faces of said bars for moving the sameagainst the base portion of the tire to clamp the tire between said barsand undercut rim; substantially as described.

4. In a vehicle-tire, the combination with the undercut channeled rimand the elastic tire seating in said rim, of transversely-movableclamping-bars located in the channel of the rim and having their outeredges inclined or undercut forming with the undercut channels in the rimchannels with undercut walls for the reception of the base portions ofthe tire and a key seating between the proximate faces of said bars formoving the same against the base portions of the tire to clamp the samebetween the bars and the rim; substantially as described.

5. In a vehicle-tire, the combination with the undercut channeled rimand elastic tire having projections seating in said undercut portions ofparallel elampingbars having their outer faces undercut, forming withthe undercut channeled rim, recesses for the reception of the baseportions of the tire, cooperating opposite inclines on the proximatefaces of the same bars, racks on the proximate faces of said bars and apinion-key cooperating with said racks to move the bars longitudinallyand spread the same against the base portions of the tire to clamp thetire between the bars and rim; substantially as described.

JAMES ALLEN SVVINEHAR'I.

Witnesses:

CHARLES MOTZ, H. J. SAUNDERS.

